package com.baocai.tools.intecpter;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class TwoIntercepter implements HandlerInterceptor {

    /**
     * 进入对应的controller方法之前
     */
    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response, Object handler) throws Exception {

        System.out.println("TwoIntercepter------>preHandle");
        return HandlerInterceptor.super.preHandle(request, response, handler);
    }

    /**
     * controller处理之后，返回对应的视图之前
     */
    @Override
    public void postHandle(HttpServletRequest request,
                           HttpServletResponse response, Object handler,
                           ModelAndView modelAndView) throws Exception {
        System.out.println("TwoIntercepter------>postHandle");
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    /**
     * 整个请求结束后调用，视图渲染后，主要用于资源的清理
     */
    @Override
    public void afterCompletion(HttpServletRequest request,
                                HttpServletResponse response, Object handler, Exception ex)
            throws Exception {
        System.out.println("TwoIntercepter------>afterCompletion");
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }


}
